一定的依赖关系(Linux文件打开、读取、写入以及关闭的概念；使用文件描述符和可以用来打开文件的模式；基本的Python结构的概念)。
Certain dependencies (Linux file open, read, write, close concepts; using the file descriptor and the modes that the file can be opened in; basic Python structure concepts).
你一定得戒烟，你每点上一枝香烟，就等于往坟墓跨近了一步。 这里的anothernail inyour coffin相当于中文的“催命符”，意思是有害健康、危及生命的东西。实际上人们给香烟起的绰号就是coffin nail。
You really ought to stop smoking. Every cigarette you light up is another nail in your coffin。
例如，一个标识符在某个系统中可能是唯一的，但是在整个企业范围内不一定真的唯一。
For example, an identifier might be unique within a single system but is it really unique across the enterprise?
您目前不一定需要使用该限定符，但是只要为其留出了几个字符的空间，以后您就可以添加该限定符。
You do not necessarily need to use it right now, but as long as you set aside a couple of characters for it you can add it later.
sql语句中的参数占位符与带注释的方法中声明的参数之间可能存在一对一的映射，但是也不一定如此。
There can be, but there is not necessarily, a one-to-one mapping of parameter markers in the SQL statement to declared parameters in the annotated method.
第二，如果需要重复短字符串来创建长字符串，可以使用 *运算符，将字符串重复一定的次数。
Second, if you need to repeat a small string to create a bigger string, you can use the * operator, which multiplies a string out a set number of times.
当你明白成功使用了一个符文，10秒之后又可以被再次使用，如果重复便能在一定程度上实现循环。
Knowing that when you successfully spend a rune it will be available again in 10 seconds allows for a certain degree if repetition.
这一定就是土之魔符了。
两者外符检验的合格率均较高，故认为对于震级和时间二要素的预测是有一定实效的。
Their qualified ration of pretest tests are both high, so they are available for forecasting magnitude and time of an event.
指出由于在曲线坐标系中，动量算符的分量不一定满足自伴性，因而公式不能成立。
In this paper, that the formula of cannot be tenable is pointed out because of the component of the momentum functor not always satisfying the self-adjointness in the curvilinear coordinate system.
在你的符文武器上镶嵌一枚符文，有一定几率对亡灵生物造成而外的火焰伤害并使之昏迷5秒。
Affixes your rune weapon with a rune that has a chance to strike undead for extra Fire damage and stun them for 5 sec. Modifying your rune weapon requires a Rune Forge in Ebon Hold.
不一定指那些在屏幕上可见的文本，还包括如换页换行符、段分隔符和图形字符等等。
Not always visible as text on the screen. For instance, includes page and line breaks, paragraph delimiters and picture characters.
不一定指那些在屏幕上可见的文本，还包括如换页换行符、段分隔符和图形字符等等。
Not always visible as text on the screen. For instance, includes page and line breaks, paragraph delimiters and picture characters.
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